Do I need to write code to use PromptLens?

No. PromptLens is entirely web-based. Paste your prompt, add test cases through the UI, and run evaluations with a click. No SDK, no scripts, no CLI.

Is Braintrust better for production monitoring?

Yes. Braintrust offers logging, tracing, and production observability that PromptLens doesn't. If you need to monitor LLM calls in production, Braintrust is stronger in that area.

Can non-developers use Braintrust?

Braintrust's evaluation workflow requires writing code (Python or TypeScript). The dashboard is viewable by anyone, but creating evaluations requires developer involvement. PromptLens is fully usable by non-technical team members.

Which tool is better for regression testing?

Both tools support regression testing. PromptLens makes it accessible to the whole team through its web UI and shareable reports. Braintrust offers more advanced programmatic testing through its SDK.

Compare

PromptLens vs Braintrust

Braintrust requires SDK integration and code to run evaluations. PromptLens lets you test prompts through a web UI — no code needed, instant results.

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Why switch

What sets PromptLens apart

No code required

YesvsNo

No SDK integration

YesvsNo

Instant setup

YesvsNo

Feature comparison

How we stack up

A side-by-side look at PromptLens and Braintrust.

Feature	PromptLens	Braintrust
No code required
No SDK integration
Instant setup
Shareable report links		Limited
Multi-model comparison
Pass/fail scoring
Version tracking
Logging & tracing
Production monitoring
Custom scoring functions
Dataset management	Web UI	Code + UI

No code required

PromptLens:

Braintrust:

No SDK integration

PromptLens:

Braintrust:

Instant setup

PromptLens:

Braintrust:

Shareable report links

PromptLens:

Braintrust:Limited

Multi-model comparison

PromptLens:

Braintrust:

Pass/fail scoring

PromptLens:

Braintrust:

Version tracking

PromptLens:

Braintrust:

Logging & tracing

PromptLens:

Braintrust:

Production monitoring

PromptLens:

Braintrust:

Custom scoring functions

PromptLens:

Braintrust:

Dataset management

PromptLens:Web UI

Braintrust:Code + UI

Deep dive

A closer look

Getting Started

How quickly can you run your first evaluation?

PromptLens

Sign up, paste your prompt, add test cases in the web UI, and click run. No code, no SDK, no configuration files. First evaluation in under 5 minutes.

Braintrust

Install the Braintrust SDK, write evaluation scripts in Python or TypeScript, configure your project, then run programmatically. Requires a developer environment.

Evaluation Workflow

How do you create and manage test suites?

PromptLens

Build test datasets through the web UI. Add inputs and expected outputs visually. Run evaluations with one click and see results immediately.

Braintrust

Define evaluations in code using the SDK. Write custom scoring functions. More flexible but requires programming knowledge for every evaluation.

Who Can Use It

Which team members can participate in prompt QA?

PromptLens

Anyone on the team — PMs, designers, engineers — can create test cases and review results through the web UI. Share reports via links with no account needed.

Braintrust

Primarily designed for developers who can write evaluation code. Non-technical team members can view results in the dashboard but can't create evaluations independently.

FAQ

Frequently asked questions

Get started

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